Wonderful image, it's simply stunning. Such lovely tones. I see that you are using Arista with HC110 dilution H. What did you rate your film at exposure wise, and what temp, agitation, and dev time did you use? I think this is a great combination and would ike to try this myself.
Andrew, our tap water's warm right now (about 24C). I usually cool it before developing, but today left it as-is. My base developing conditions for Arista.EDU Ultra (exposed at 100) are 7:12 at 20C. This worked out to about 5 minutes at 24C today. I use a Uniroller setup.